No they are still for sale. I tried a BCR fitted with them and it was a lot better for my poor old back. Thats why I got them in the first place. I then decided to sell the BCR and so I did not fit them in the end.

I guess there are guys on here who can advise you on the longer term benefits better than I.

Let me know if you wish to buy them and let me have your details on a PM.